Visionar 100 mm. f/1.6 + Speed Booster - first shots

[dan_]

I've just finished the work at my Visionar 100mm f/1.6 projection lens and now it has a diaphragm, a focusing helicoid and a Leica R mount to allow me to mount it on my Leica R - Sony NEX Speed Booster. All the steps of this adaptation can be read in detail here:
http://forum.mflenses.com/forcing-the-visionar-100mm-f-1-6-to-accept-a-diaphragm-t68374.html

The lens is now looking like this:



Used in conjunction with the Speed Booster my Visionar becomes a 70 mm. f/1.15 lens, very convenient for close up and portrait shots. And, taking advantage of a late autumn sunny day, that's exactly what I tested it for.




And an 100% detail:










And some portraits :



And an 100% detail:






And a B&W conversion portrait:

[cyrano]

What a fantastic effort Dan, I tip my hat to you.

[Olivier]

That's really impressive.
It was worth the effort !

Congratulations for the hard precise work and these great photographs.
I believe you were very satisfied, weren't you ?

[Lloydy]

Yes, impressive work Dan. Not only on the skilled conversion, but the quality of the images.

[IAZA]

beautiful finish Dan.. congratz..
Any hint of F stop on pictures, to see different with and without aperture?
Nice results BTW

[BurstMox]

Great job! And nice results

[RSalles]

Terrific result! This is a superb lens, very well balanced between sharpness, color sat., color temp., macro & micro contrast, bokeh smoothness, and so on.
The way you've framed the images is also very nice, great work, worth the work done,

Best,

Renato

[exaklaus]

What a nice job! Precisly done. And your great photos show, it was well worth the efforts!


Klaus

[uddhava]

Really excellent job and photo results! Good work.

[dan_]

Thank you very much gentlemen! I appreciate your kind words very much.

So far I like this lens a lot. But, as always happens, it has its drawbacks.
I wouldn't use it for all-sharp landscapes because its region of sharp focus is rather spherical (only noticeable in real life when the lens is focused at infinity), and its weight, while still comfortable at limit, is quite significant.

Olivier
Yes Olivier, I'm quite satisfied with the final conversion and I think it was worth the effort. Thanks a lot for your appreciation.

IAZA
Thank you, Suat. I'll make a comparative test with the lens closed to all diaphragm f-stops in the next day.

RSalles
Yes Renato, I think the lens has a very nice balance, too. Thank you.

[SVP]

Fantastic results, congrats!

[dan_]

Thank you, SVP.

[Kamosor]

Dan, you did it GREAT conversion and beautiful photos.

[rebelstar]

Great work! How did you calculate "boosted" 1.15 aperture of initial f1.6? I have booster too for my nex-5n and wide amount of different lenses. For example what aperture will be for 50mm 1.7 and 100mm 1.8 with booster?

[dan_]

Thank you Kamosor and rebelstar.

[rebelstar]

Thank you for this formula! So basically each time I need use x0.7? So, Canon dream lens 50 0.95 will be ~f0.6

[dan_]

Yes, that is the formula.
If you read carefully the Speed Booster White Book on the Metabones site they say that there is a limit for the increase in luminosity with very luminous lenses. Probably the 50 f/0.95 Canon lens exceeds that limit.

[kuuan]

wow, congrats Dan, so very well done, and the results are amazing, specially the portrait and the crop of it!
...........
resp. the Canon 0.95, for it being a rangefinder lens there no existing lens turbo, doubt it, but possibly there is enough space to X or E mount for a diy project (?)

[dan_]

Thanks Kuuan!

[Langstrum]

I'd like to see more fantastic photos from this lens, it's amazing

[frenched]

As others have said, well worth the effort. Magnificent results!

[moltogordo]

Ingenuity is alive and well in Romania! Excellent images, too! Bravo!

[dan_]

Thanks Langstrum, frenched and moltogordo.

[vroger]

Great results!!!!!!!!!!!!

[hoanpham]

I haven't seen until now. Very nice. More please.